231997547680 has 48 divisors (see below), whose sum is σ = 548197179264. Its totient is φ = 92781584640.

The previous prime is 231997547609. The next prime is 231997547681. The reversal of 231997547680 is 86745799132.

It is not an unprimeable number, because it can be changed into a prime (231997547681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 735469 + ... + 1002451.

It is an arithmetic number, because the mean of its divisors is an integer number (11420774568).

It is a 1-persistent number, because it is pandigital, but 2⋅231997547680 = 463995095360 is not.

Almost surely, 2^231997547680 is an apocalyptic number.

231997547680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231997547680 is an abundant number, since it is smaller than the sum of its proper divisors (316199631584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231997547680 is a wasteful number, since it uses less digits than its factorization.

231997547680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272429 (or 272421 counting only the distinct ones).

The product of its (nonzero) digits is 22861440, while the sum is 61.

The spelling of 231997547680 in words is "two hundred thirty-one billion, nine hundred ninety-seven million, five hundred forty-seven thousand, six hundred eighty".